Closure fastener



N. M. BLAKE CLOSURE FASTENER Nov. 20, 1956 Filed Dec. 2, 1954 NICHOLAS M. BLAKE /m MM ATTORNEYS United States Patent CLOSURE FASTENER Nicholas M. Blake, Oshkosh, Wis.

Application December 2, 1954, Serial No. 472,637

2 Claims. (Cl. 292-142) This invention appertains broadly to a novel device for releasably locking storm sashes or screens in a frame, such as a combination storm and screen door and more particularly to a novel lock or bolt especially suitable for such purpose.

One of the primary objects of my invention is to provide a positive acting lock for screen and storm sashes which is of an exceptionally simple and compact form, whereby the same can be easily set in a mortice formed in a narrow or thin member, such as a combination storm and screen door.

Another salient object of my invention is to provide a lock embodying a novel casing open at its opposite ends for receiving a sliding bar or bolt and a rotatable pinion having interrupted cogs for operating the bolt, the bolt and pinion being also of a novel construction so as to insure positive operation and to occupy a small space.

A further object of my invention is to provide novel means for forming the casing and the pinion, whereby the pinion will be effectively supported for turning movement without the employment of extraneous members, such as shafts, pivot bolts or the like.

A further important object of my invention is the provision of novel means for forming the sliding bar or bolt so that when the bolt reaches its locked position, the pinion will be operated by 'the bolt so that the pinion will act as a wedge between the bolt and the casing to positively hold the bolt against retraction until the pinion is again operated to move the bolt to its withdrawn position.

A still further object of my invention is to provide a lock of the above character, which will be durable and eicient in use, one that will be simple and easypto manufacture and one which can be placed upon the market at a reasonable cost.

With these and other objects in view, the invention consists in the novel construction, arrangement and formation of parts, as will be hereinafter more specifically described and claimed and illustrated in the accompanying drawing, in which drawing,

Figure l is a front elevational view showing a combination storm and screen door with my improved locks associated therewith for holding a storm sash in positionin the door, parts of the figure being shown broken away and in section;

Figure 2 is an enlarged fragmentary detail vertical sectional view through the door taken on the line 2-2 of Figure l, looking in the direction of the arrows, the view showing the lock in transverse section and illustrating the novel means for supporting the pinion within the casing;

Figure 3 is a vertical sectional view taken at right angles to Figure 2 and on the line 3-3 of Figure 2, the view showing the bar or bolt in its locked position;

Figure 4 is a View similar to Figure 3, but showing the bar or bolt in its retracted position, and

Figure 5 is a detail horizontal sectional View taken on the line 5-5 of Figure 3, looking in the direction of the arrows and showing the engagement of the final cog of the pinion with the bolt.

Referring to the drawing in detail, wherein similar reference characters designate corresponding parts throughout the several views, the letter D indicates a combination storm and screen door. The door can be considered as of a type now in general use and hence is provided with an elongated opening 10 into which is removably fitted a storm sash 11 or a screen, not shown. In order to tightly hold the storm sash 11 or the screen in the door against accidental and unauthorized displacement, I employ my improved locks L. Combination storm and screen doors are of a thin or narrow construction so as to reduce weight and cost and the locks L have been designed so that `the sarne will effectively tt in thin frames or doors. It is preferred to use four locks to detachably hold the storm sash or window screen in place and all of the locks are of identical construction and hence a detailed description of one will serve for all.

Each lock L includes a casing 12 preferably formed from sheet metal of a thin gauge and this casing includes spaced parallel side walls 13 and 14 and top and bottom walls 15 and 16. The opposite ends of the casing are open so that the casing can be either used on the right or left hand side of the door. The casing 12 is formed from a single sheet of metal folded or stamped into proper shape and the sheet is bent on longitudinal lines to dene the bottom wall 16 and the side walls 13 and 14. The side walls 13 and 14 in turn have inwardly bent flanges which meet and form the top wall 1S.

Slidably mounted within the casing 12 is lthe locking bar or bolt 17, and this bolt is supported by the bottom wall 16 and the bolt slides on this wall. In assembling the bolt with the casing, care is taken so that the bolt can be projected from either end of the casing, according to whether the locks L are right or left handed. The bolt 17 is also preferably formed from sheet metal stamped into the desired configuration, but obviously, this bolt can be cast, if such should be desired. In all events the bolt 17 for the major portion of its length is formed to provide a lower longitudinally extending rib 18 and an upper laterally offset rib 19. The rib 19 terminates short of the inner end of the bolt and the rib at its inner end is provided with a series of teeth 20. The innermost tooth has its rear face beveled or inclined, as at 21, for a purpose which will later appear.

Also mounted within the casing 12 is a pinion 22 and the pinion has formed on its periphery a series of radially extending cogs 23 for engagement with the teeth 20 and it is to be noted that the cogs 23 only extend around the pionion for a portion of its circumference. This pinion is also preferably formed from sheet metal and has struck out from its axial center a bearing hub 24 and this hub is provided with a diametrically extending slot 25 for the reception of a turning tool, such as a screw driver.

The wall 13 of the casing 12 has struck inwardly therefrom an apertured boss 26 and the hub 24 of the pinion is received within the aperture of the boss 26 for turning movement. The provision of the struck out hub and the struck in boss forms a simple and inexpensive means for mounting the pinion within the casing for turning movement.

In mounting the lock on the door D, mortices 27 are formed in the door at the desired points for receiving the lock casing and so that the bolts 17 can project into the opening 10 occupied by the storm sash or the screen, as the case may be, and the frame of the screen and the storm sash 11 is provided with keeper openings 28 into which the bolts are projected so as to hold the storm sash or the screen in place. The door itself is provided with openings 29 bored therein in direct alignment with the hubs 24 of the pinions and the bosses 26 and thimbles or ferrules 30 are titted in these openings 29 so as to prevent the splitting of the wood from which the door is formed,`

and these thimbles or ferrules define guides for a screw driver to facilitate the insertion thereof in the slots 25 of the pinions.

In use of my locks and considering that the bolts are retracted, a screw driver is inserted through the thimble or ferrule 30 and into the slot 25 and by turning the screw driver, the pinion 22 can be turned bringing about the projection of the bolts 17 into its keeper opening. As the last cog 23 of the pinion engages the inclined face 21 of the last tooth 20, this face tends to move the pinion 22 laterally in the casing in binding engagement with the wall 12 of the casing which effectively holds the pinion against accidental or unauthorized turning movement. As the openings 29 are on the inner face of the door, persons on the outside of the door cannot reach the openings to turn the pinions and the bolts cannot be moved by a sharp implement from the outside in view 0f the wedging of the pinion.

When it is desired to remove the storm sash l1 and replace the same by a screen, it is merely necessary for the housholder to again turn the pinion 22 by means of a screw driver in a clockwise Adirection (see Figs. 3 and 4), and this will bring about the retraction of the bolt.

From the foregoing description, it can be seen that I have provided an exceptionally simple and durable form of lock which is of such a character that the sarne will occupy a minimum amount of space and one which is of a positive acting nature.

Changes in details may be made without departing from the spirit or the scope of this invention, but what l claim as new is:

1. In a combination storm and screen door, a positive acting lock for securing a removable panel in said door including a casing having spaced parallel side walls and top and bottom walls, a bolt mounted in said casing slidably mounted on the bottom wall and said bolt having a lower longitudinally extending rib and an upper 4 receiving the hub and engaging one face of the pinion, the opposite face of-said pinion engaging the other side wall of the casing, said pinion having radially extending cogs around the periphery of the pinion for a portion of the circumference of said pinion for sliding said bolt upon turning of the pinion, the inclined face of the innermost tooth of the rack teeth tending to move the pinion laterally into binding engagement with a side wall of the casing when a cog of the pinion forcibly engages said inclined face.

2. In a combination storm and screen door, a positive acting lock for securing a removable panel in said door including a casing having spaced relatively narrow parallel side walls and topl and bottom walls,` a bolt mounted in said casing slidably mounted on the bottom wall and said bolt having a lower longitudinally extending rib and an upper offset longitudinally extending rib terminating short of the inner end of said bolt, said upper rib having side surface engaging one of said side walls and said lower rib having a surface engaging said other side. wall, said upper rib being provided with rack teeth, with the innermost tooth inclined, a pinion disposed in said casing having a laterally projecting bearing hub provided with a diametrically extending tool receiving slot, an. apertured bearing boss struck in from one side wall of the casing rotatably receiving the hub and engaging one face of the pinion, the opposite face of, said pinion engaging the other side wall of the casing, said pinion having radially extending cogs around the periphery of the pinion for a portion of the circumference of said pinion for sliding said bolt upon turning of the pinion, the inclined face of the innermost tooth of the rack teeth tending to move the pinion laterally into binding engagement with a side wall of the casing when a cog of the pinion forcibly engages said inclined face.

References Cited inthe tile of this patent UNITED STATES PATENTS 48,925 Garver July 25, 1865 591,356 McCall Oct. 5, 1897 FOREIGN PATENTS 536,461 Great Britain Mayr 15, 1941 

